Dunno how far into the thought process Playtonic is for their level ideas, but maybe we can give some hints from past experiences that they've created in terms of what we hope to see more of. Obviously they can't recreate these for legal reasons, but maybe they can provide something similar somewhere.

Click Clock Wood wins for Banjo Kazooie. I like all the seasons, but I guess I'd pick Winter as my favorite.You also forgot to put Freezeezy Peak in your list!

For Banjo Tooie I loved Jolly Rodger's Lagoon. A completely underwater level was a huge deal to me, especially since I didn't have to worry about coming up for air. I really hope Yooka-Laylee can have a similar type level, maybe a reef, with more fish and coral underwater. Jolly Rodger's Lagoon was awesome, but it was a little bare.

Fungi Forest was my favorite DK64 level as well. I think I liked it so much since there were so many other dark levels (factory, cave, and castle).

Oh the whole I loved BK but wasn't very impressed with DK64. BT was okay but it suffered from a lot of the problems that I felt spoiled the immersion of the game in both BT and DK64. Specifically this was having butt-stomping switches and character pads littered throughout the level with no plausible explanation as to why.

BK had you completing "quests" for characters. This immersed you in the game and made you care about the characters and "quests". DK64 and to a lesser degree BT just had to methodically and mechanically collecting items and butt-stomping switches. I thought it was dull, boring and didn't enjoy it as much. However DK64 had awesome boss fights.

I know those levels aren't as popular, but there is something about Industrial Levels I enjoy. Rusty Bucket is my favorite out of all three games, and I enjoy confusing twists and turns Grunty Industries and Frantic Factory give me. I feel like the difficulty and tediousness of completing them pays off more in the end. Plus Weldar and Mad Jack are stand out bosses in their respective games for me.

For BK, the ones I really liked were Bubblegloop Swamp (no one seems to mention this one but I think it was my favorite), Freezeezy Peak and Mad Monster Mansion. The other levels were cool also, but those three really stood out to me.

For BT, I loved WitchyWorld, Terrydactyland and, most of all, Hailfire Peaks. There's just something about this whole fire and ice dynamic that I just loved so much!

DK64's levels were not really interesting to me. The only one I really liked was Fungi Forest, but it was planned to be in BK anyway.

What I love the most in those levels are the themes, so I don't know how they could make that again if they don't plan to reuse the themes... On a side-note, Snow Joke seems like a level I'd really enjoy.

Banjo-Kazooie:1) Click-Clock Wood: Easy number one for me, and honestly one of my favorite levels/worlds in any game. Everything, in my opinion, is topnotch; from the level-design, to the the music and the forest aesthetic.2) Bubblegloop Swamp: I like the swamp design a lot, and I think the level has a nice variety of challenges and flows well. Plus it has my favorite Mumbo transformation!3)Treasure Trove Cove: Fun level, that seemed big but isn't too daunting. Great music as well.

Banjo-Tooie:1)Glitter Gulch Mine: While it is a confusing place to navigate, I actually really like GGM. The music track is my favorite from the sequel and it's got some cool characters and fun challenges.2) Witchyworld: I love the run-down amusement park look and the variety of areas that the level has. The music really sells the theme of the worlds as well.3) Terrydactyland: I know a lot of people don't really like this level, and there's good reason too. The challenges are a little too spread out and there's too much backtracking I think. That being said, I really enjoy the prehistoric theme and I love the T-Rex transformation.

I sadly never played DK64 but Ill give you my top there based on how cool the name is 1)Gloomy Galleon2)Angry Aztec3)Crystal Caves